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Finding the Fourth Proportional to 640,523.71, 883,832.40 and 364,888.81

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Solution

The fourth proportional to 640,523.71, 883,832.40 and 364,888.81 is: 503,495.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,523.71 : 883,832.40 = 364,888.81 : x
  2. Step 2: Convert to fraction form
    640,523.71/883,832.40 = 364,888.81/x
  3. Step 3: Cross multiply
    640,523.71x = 883,832.40 × 364,888.81
  4. Step 4: Simplify right side
    640,523.71x = 322,500,552,675.44
  5. Step 5: Solve for x
    x = 322,500,552,675.44/640,523.71
  6. Step 6: Final answer
    x = 503,495.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.